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Now showing items 1561-1570 of 2111
Self-assembly of iron nanoclusters on the Fe3O4(111) superstructured surface
(2005)
We report on the self-organized growth of a regular array of Fe nanoclusters on a nanopatterned magnetite
surface. Under oxidizing preparation conditions, the s111d surface of magnetite exhibits a regular superstructure
with ...
Evolution of the ionizing background at high redshifts
(1997)
The decrease in number density of Lyman alpha clouds near the background quasar is an observational result that is often called the `proximity' or `inverse' effect. It is thought that, for nearby clouds, the flux of the ...
Surface reconstructions of Fe3 O4 (001)
(Trinity College (Dublin, Ireland). School of Physics, 2002)
In this thesis, the (001) surface of magnetite artificial single crystals has been studied using low-energy electron diffraction (LEED), Auger electron spectroscopy (AES) and Scanning Tunneling Microscopy (STM). STM ...
Effect of static electric field on luminescence spectra of quantum-size CdS, PbI2 particles and CdS monocrystals
(1995)
The influence of static electric field on the luminescence spectra of quantum confined CdS and Pbl2 particles as well as bulk CdS monocrystals has been studied in this work. The applied electric field causes the increase ...
Magnetic excitations in a nanocontact
(American Physical Society, 2001)
The domain wall in a ferromagnetic nanocontact adopts a specific configuration?Neel-like, vortex, or Bloch-like?depending on the dipole-dipole interactions governed by the size and shape of the contact and its atomic ...
Steady states of a chi(3) parametric oscillator with coupled polarizations
(2003)
Polarization effects in the microcavity parametric oscillator are studied using a simple model in which two
x3 optical parametric oscillators are coupled together. It is found that there are, in general, a number of ...
First-principles study of high-conductance DNA sequencing with carbon nanotube electrodes
(2012)
Rapid and cost-effective DNA sequencing at the single nucleotide level might be achieved by measuring
a transverse electronic current as single-stranded DNA is pulled through a nanometer-sized pore. In order to
enhance ...
Ni(OH)2@Co(OH)2 hollow nanohexagons: Controllable synthesis, facet-selected competitive growth and capacitance property
(2014)
Hollow nanohexagons with a core?shell structure have been synthesized from a mixture of Ni and Co hydroxide by a mild wet chemical approach. Ni(OH)2@Co(OH)2 nanohexagons with controllable sizes of about 200 nm, morphology ...
The Type IC supernova 1994I in M51: detection of helium and spectral evolution
(American Astronomical Society, 1995)
We present a series of spectra of SN 1994I in M51, starting 1 week prior to maximum brightness. The nebular
phase began about 2 months after the explosion; together with the rapid decline of the optical light, this ...